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AutoCodes - Generic - B1D02

B1D02 Code - Left High Beam Circuit Short

- Code Popularity: 6,249 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B1D02?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Left High Beam Bulb
  • Left High Beam Bulb harness is open or shorted
  • Left High Beam Bulb circuit poor electrical connection
  • Faulty Steering Column Control Module (SCCM)
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How to Fix the DTC B1D02?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

B1D02:11 Left High Beam Circuit Short To Ground
B1D02:15 Left High Beam Circuit Short To Battery or Open

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1D02 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code B1D02 Description

The Steering Column Control Module (SCCM) monitors input from the multifunction and headlamp switches. When the headlamp switch is in the HEADLAMPS ON position and the multifunction switch is placed in the HIGH BEAM position, the SCCM sends a message to the Body Control Module (BCM) over the High Speed Controller Area Network (HS-CAN), indicating a high beam request. The BCM then provides voltage to the high beams. The BCM provides an overload protection of the high beam output circuits. When an excessive current draw is detected, the BCM disables the affected high beam circuit driver. The Instrument Panel Cluster (IPC) also receives a message over the HS-CAN to illuminate the high beam indicator when a request for the high beams is received. This Diagnostic Trouble Code (DTC) sets when the BCM detects a short to ground or open from the LH high beam output circuit.

OBDII Code B1D02 - Left High Beam Circuit Short - AutoCodes.com
B1D02 Code - Left High Beam Circuit Short

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Code B1D02 comments

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